Wis. Stat. § 893.22
If a person entitled to bring an action dies before the expiration of the time limited for the commencement of the action and the cause of action survives, an action may be commenced by the person's representatives after the expiration of that time and within one year from the person's death. If a person against whom an action may be brought dies before the expiration of the time limited for the commencement of the action and the cause of action survives, an action may be commenced after the expiration of that time and within one year after the issuing, within this state, of letters testamentary or other letters authorizing the administration of the decedent's estate.
Wis. Stat. § 893.22
This section does not provide a one-year extension of the statute of limitations from when a creditor, or another, petitions for probate of the decedent's estate under s. 856.07. The section only applies when a person entitled to bring the action dies with an existing claim that has less than one year remaining on the period of limitations. In such cases, the period of limitations is extended for one year, which begins to run upon the person's death. Kurt Van Engel Commission Co. v. Zingale, 2005 WI App 82, 280 Wis. 2d 777, 696 N.W.2d 280, 04-1900. See also Walberg v. St. Francis Home, Inc., 2005 WI 64, 281 Wis. 2d 99, 697 N.W.2d 36, 03-2164.